.lt_form {
    padding: 10px;
    .vcode-row {
        #vcode_txt {
            width: 50%;
            float: left;
        }
        #vcode_btn {
            float: right;
            width: auto;
        }
    }
    .lt_register_row {
        padding: 10px 0;
        #register_btn {
            width: 100%;
        }
    }
    .lt_tips_row {
        padding: 10px 0;
        font-size: 12px;
        display: flex;
        justify-content: space-between;
    }
}